list item 选中状态。

itemActivated

item_layout's background.

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">

    <item android:drawable="@drawable/bg_music_list_item_selected" android:state_pressed="true"></item>
    <item android:drawable="@drawable/bg_music_list_item_selected" android:state_selected="true"></item>
    <item android:drawable="@drawable/bg_music_list_item_selected" android:state_activated="true"></item>
    <item android:drawable="@drawable/bg_music_list_item_normal" ></item>

</selector>


		mDrawerList = (ListView) findViewById(R.id.left_drawer);
		mDrawerList.setChoiceMode(ListView.CHOICE_MODE_SINGLE);
		
		mDrawerList.setItemChecked(position, true);